Title: Voltage detector for measurement and protection purpose for use in medium-voltage switch gear
Application Number: 98801095 Application Date: 1998.03.05
Publication Number: 1236436 Publication Date: 1999.11.24
Approval Pub. Date: 2004.03.03 Granted Pub. Date: 2004.03.03
International Classifi-cation: G01R15/04
Applicant(s) Name: Felten Address:
Inventor(s) Name: Rolf Dirks
Attorney & Agent: zhang zhaodong
Abstract:
    The invention is based on a voltage detector for measurement and protection purposes in medium-voltage switch gear. Said voltage detector comprises an ohmic voltage divider cast in a casting resin which is connected to an overvoltage diverter having a grounding connection. The invention improves the voltage detector in that it can be used with different ranges of medium-high voltage, has a compact design and can be assembled easily. Said detector comprises a voltage divider (2) consisting of a high ohmic high-voltage resistor (R1) and several low-voltage divider resistors (R2; R3) which are connected in series with said high-voltage resistor, which on their output side are each connected to a contact element (7.1, 7.2, 7.3) positioned on the outside of the voltage detector, and in which the overvoltage diverter (3) is arranged parallel to the low-voltage divider resistors (R2, R3).
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